Assembly of N,N-disubstituted-N′-arylureas via a copper-catalyzed one-pot three-component reaction of aryl bromides, potassium cyanate, and secondary amines
作者:Hongfei Yin、Bing Chen、Xiaojing Zhang、Xinye Yang、Yihua Zhang、Yongwen Jiang、Dawei Ma
DOI:10.1016/j.tet.2013.04.117
日期:2013.7
A three-component reaction of aryl bromides, potassium cyanate, and secondary amines takes place at 110 °C in MeCN under the catalysis of Cu2O and 2-(2,6-dimethylphenylamino)-2-oxoacetic acid potassium salt, giving N,N-disubstituted-N′-arylureas in good to excellent yields. A number of functionalized aryl bromides and secondary amines were compatible with these conditions, and thereby providing a facile
甲基溴中的芳基溴化物,氰酸钾和仲胺的三组分反应在Cu 2 O和2-(2,6-二甲基苯基氨基)-2-氧乙酸钾盐的催化下于110°C在MeCN中进行,得到N,N-二取代-N'-芳基脲的收率为好至极好。许多官能化的芳基溴化物和仲胺与这些条件相容,从而为三取代脲的多样化合成提供了一种简便的方法。